SUS430F Stainless Steel | SUS430F | SS430F

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SUS430F Stainless Steel | SUS430F | SS430F Stainless Steel SUS430F Stainless Steel | SUS430F | SS430F Stainless Steel


We are the Leading Supplier of Stainless Steel SUS430F.  
Stainless Steel SS430F is the free-machining version of Stainless Steel Grade SUS430, available in bar form for use in automatic screw machines. 

We supply and export to Singapore , Indonesia , Brunei and other ASEAN Countries.  
Our specialty is to provide wide range of stainless steel
 with no minimum order (MOQ).

E Steel supply Stainless Steel 430F (SUS430F, SS430F) Round Bars / Rods / Shaft , SUS430F (SS430F) Plates.  




Stainless Steel SUS430F Supplier – SUS430F , SS430F , UNS S43020 , DIN 1.4104

SUS 430 is a ferritic, straight chromium, non-hardenable grade, combining good corrosion resistance and formability characteristics with useful mechanical properties. Its ability to resist nitric acid attack permits its use in specific chemical applications but automotive trim and appliance components represents its largest fields of application.

SUS 430F is the free-machining version of this grade, available in bar form for use in automatic screw machines. SUS 434 is the molybdenum bearing version of SUS 430 and has the same useful combination of properties. Its molybdenum addition improves corrosion resistance.

Chemical Formula of Stainless Steel SS430F 

Fe, <0.12% C, 16-18% Cr, <0.75% Ni, <1.0% Mn, <1.0% Si, <0.040% P, <0.030% S


Composition for SUS430 / SUS430F Grade Stainless Steel

Grade C Mn Si P S Cr Mo Ni N
SUS430
Stainless Steel 
min.

max.

0.12

1.00

1.00

0.040

0.030

16.0

18.0

0.75

SUS430F
Stainless Steel 
min.

max.

0.12

1.25

1.00

0.06

0.15

16.0

18.0



Mechanical Properties of SS430 / SS430F Stainless Steel

 Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
SS430 450 205 22 89 183
SS430F 552 typical 379 typical 25 typical 262


Grade Specification Comparison for 430 grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
SS430 S43000 430S17 60 1.4016 X8Cr17 2320 SUS 430
SS430F S43020 1.4104 X12CrMoS17 2383 SUS 430F

* These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Corrosion Resistance of SUS430F 

SUS430 has good resistance to a wide variety of corrosive media including nitric acid and some organic acids. It attains its maximum corrosion resistance when in the highly polished or buffed condition. In general its resistance to pitting and crevice corrosion resistance is close to that of SUS304. Stress corrosion cracking resistance of SUS430 is very high, as it is for all ferritic grades.

Like other high-sulphur free machining grades 430F has much reduced resistance to pitting and crevice corrosion compared to its non-free machining equivalent, particularly in the cross-section direction.


Heat Resistance of SS430F Stainless Steel 

Resists oxidation in intermittent service up to 870°C and to 815°C in continuous service. This grade may become brittle at room temperature after prolonged heating in the 400-600°C range. This effect can be eliminated by annealing.


Heat Treatment of sus430 , sus430f

Solution Annealing – Heat to 815-845°C, hold for ½ hour per 25mm of thickness, slow furnace cool to 600°C and then quickly air cool. Slow cooling from 540-400°C will cause embrittlement.

Sub-Critical anneal – Heat to 760-815°C and then air cool or water quench.

This grade is not hardenable by thermal treatment.

Note that SUS430 is likely to scale more heavily at elevated temperatures than SUS304, and the scale produced is more difficult to remove by pickling.


Welding

If welding is necessary pre-heat at 150-200°C. Embrittlement in the weld metal and heat affected zone can be relieved by a post-weld anneal at 790-815°C, but grain refinement will not occur. Use Grade SS430, SS308L, SS309 or SS310 filler rod, depending upon application. AS 1554.6 pre-qualifies welding of Grade SS430 with Grade SS309 filler rods and electrodes.


Machining

Grade SUS430 is easier to machine than the standard austenitic grades such as SUS304, but there is still a tendency for galling and pick-up on the cutting tool. Bars that have been lightly drawn are easier to machine than those in the annealed condition. Grade SUS430F, the free machining version of SUS430, is very much easier to machine.


Fabrication

The lower work hardening rate makes bending and forming somewhat easier than for grade SUS304, but the lower ductility restricts very severe operations. Wherever possible severe bends should be made with the bend axis at right angles to the rolling direction. Severe cold heading of SUS430 wire is possible.

If very severe cold working is required it may be necessary to carry out a sub-critical intermediate anneal.


Applications of SUS430F Stainless Steel 

Typical applications for 430 Grade Stainless Steel include : 
  • Linings for dish washers
  • Refrigerator cabinet panels
  • Automotive trim
  • Lashing Wire
  • Element Supports
  • Stove trim rings
  • Fasteners
  • Chimney Liners

Typical applications for 430F Grade Stainless Steel include : 
  • Repetition machined components


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Australia, Pakistan,  Malaysia, Singapore, Taiwan, China,Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei,Germany.

E Steel is a Global Metal Procurement Company in providing and sourcing raw materials to the wide range of engineering industries / sectors.  We works as the the Online B2B Metal Marketplace to help our customers in finding the special steels that might feel hard to source locally.  


 

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